Segmented Grommet Assembly for Easy Damage-Free Detachment
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Solution Overview
Problem
Existing fastening assemblies with grommets and pins face challenges in efficiently and easily detaching from connected parts, particularly when the parts have varying thicknesses, and the configuration of second retaining portions can be damaged during detachment.
Innovation Solution
The grommet design includes first and second retaining portions, with operating portions that allow the grommet to switch between states, enabling easy detachment by deflecting the first body segments and first retaining portions without damaging the second retaining portions, and features notches to prevent interference during detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the grommet uses a conventional retaining structure for detachment, then the grommet can be retained in the hole, but the detachment process damages the second retaining portions
Solution Approach 1:
The grommet body is divided into multiple body segments (first body segment, second body segment, third body segment) that can deflect independently. The retaining portions are segmented such that first retaining portions can move during detachment while second retaining portions remain stationary, preventing damage to the second retaining portions during the detachment process.
2Strength
If the grommet body is rigid for structural strength, then the grommet maintains its shape, but detachment requires excessive force and may damage components
Solution Approach 1:
The grommet body segments are designed with dynamic characteristics, allowing them to deflect and move during the detachment process. The first body segment can deflect relative to the second and third body segments, enabling controlled movement of the first retaining portions without compromising the overall structural integrity of the grommet.
3Stability of the object's composition
If the grommet retains all body segments fixed for stability, then the grommet remains stable in installation, but detachment operations interfere with each other
Solution Approach 1:
The grommet is segmented into multiple independent body segments that can move relative to each other during detachment. This segmentation allows the first body segment to deflect independently, enabling the first retaining portions to move without interfering with the second retaining portions, thus facilitating smooth detachment operations while maintaining stability during installation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates easy and damage-free detachment of the grommet from connected parts, even with varying thicknesses, by allowing greater movement of the first retaining portions and reducing interference, enhancing operational ease and durability.
Implementation Method 1
The first body segment is deflectable about a second axis toward the longitudinal axis
Data Source
AI summary
The present disclosure provides a grommet including a body, at least one first retaining portion, at least one second retaining portion and at least one operating portion. The body defines a receiving channel and a longitudinal axis, and includes a first axial body portion and a second axial body portion. The first axial body portion includes at least one first body segment and at least one second body segment disposed about the axis and spaced apart. The first retaining portion is provided on a side of the first body segment facing away from the axis. The second retaining portion is provided at an end of the second body segment away from the second axial body portion and extends away from the axis. The operating portion is provided at an end of the first body segment away from the second axial body portion and extends away from the axis.